TB Test Process in India

Hi Everyone,
My wife is going to apply for Spouse Visa from India (Chandigarh) and she went for TB test . However the test center person said that we don't issue certificate these days rather when you will apply for Visa, you will get a reference number for your visa application and you have to submit that reference number to the clinic and we will dispatch that certificate directly to immigration.
I just wanted to know if this is new procedure since on UKBA site it is not mentioned this way.

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This is what mentioned on UKBA site.

If you do not have tuberculosis you will be given a certificate which you should submit with your visa application. The certificate is usually valid for 6 months. You will need to bring the certificate with you to the UK, and you should carry it in your hand luggage - if you do not do this, you may be delayed on arrival in the UK. We also advise you to take your chest x-ray with you to the UK, in case you need to see a doctor during your stay.